Composition for staining and preserving wood



STATES N ITE in:

FFICE.

A'rEN'r SAMUEL OABOT, JR, OF BOSTON, MASSACHUSETTS.

SPECIFICATION forming part of Letters Patent No. 297,568, dated April29, 1884.

Application filed July 16,1883. (Specimens) T0 at whom it may concern.-

Be it known that I, SAMUEL Carol, J r., of Boston, in the county ofSuffolk and State of Massachusetts, have invented certain new and usefulImprovements in Compositions for Staining and Preserving Wood-WVork; andI do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

My invention relates to an improvement in compositions for staining andpreserving woodwork and carpentry which is exposed to the action of theelements, the composition being especially adapted to be applied toclapboards, and to the ornamental shingles now so much used byarchitects in the production of striking and novel effects.

The object of my invention is to produce a composition which, whenapplied to wood, will preserve and color or stain it without masking orconcealing its natural grain.

WVith thisobject in view my invention consists in a composition composedof any of the heavy oils obtained from the distillation of tar, and of apigment and a drier, or a single equivalent for both.

The oil or distillate which I employ in, the preparation of my improvedcomposition is obtained from the distillation of tar left after thedestructive distillation of carbonaceous substances. Preferably I usethe distillate which passes over between the temperatures of 125 and 200centigrade. I also prefer to redistill this distillate to clarify it.

To prepare the compound I take, prefer ably, between ten and fifteenparts, by weight, of any finely-divided pigmentsueh as Vene tian red,Oxford ochre, chrome-yellow, and all organic and mineral colors that arenot altered by the air in the presence of the oily elements of themixtureand grind it in a drier, preferably boiled'linseed-oil. To this Iadd slowly about one hundred parts, by weight, of the refined tar-oil,which is thor oughly mixed with the pigment. In case the pigment is notground in a drying-oil, a suitable quantity of any of the drying-oils isadded to the mixture; but this is not necessary if the pigment is groundin boiled linseed-oil, as described. If desired, the pigment and driermay be replaced by a colored gum resin, which will at once color thecomposition and hasten its drying.

The gum of aloes will impart a yellow color to the composition, whilethe resinous pitch of coal-tar will impart a brown tinge to the mixture.I do not, however, limit myself to the gum-resins specified, for anyother gums having a sufficient intensity of natural coloring and capableof being dissolved in alcohol or in benzole may also be employed, allsuch gums being soluble in the oily element of the composition.

The application of the composition may be effected either by a brush orthe wood may be immersed in it. Its operation is to preserve thearticles to which it is applied and to impart a pleasing color to them.It is very penetrating in its nature, and therefore unequaled inpermanency of color and in preserving effect, being superior in theserespects to the ordinary paints. Inasmuch as the composition is entirelyabsorbed by the wood-work, no skin is formed upon the surface thereof.On the other hand, the uses of oil-paints, especially those preparedwith linseed-oil, result in the formation of askin, which causestheretention of moisture under the woodwork.

So far from marking or concealing the grain of the wood, the effect ofthe composition is to bring it out or develop it, thereby imparting tothe wood-work the appearance ofhaving been treated in detail.

The price of the composition is much less than that of oil-paints. Italso has the advantage of being mixed ready for use, whereby uniformityof color is insured. By its use new and very artistic effects in colorand harmony as applied to exterior decorations may be obtained.

Having fully described my invention, whatI claim as new, and desire tosecure by Letters Patent, is-

A composition for staining and preserving wood, composed of rectifiedcreosote-oil, or any of the distillates of coal-tar which pass overbetween 125 and 200 centigrade, about fifteen per cent. offinely-divided pigment, and about ten per cent. of drying-oil,substantially as set forth.

In testimony whereof I have signed this specification in the presence oftwo subscribing witnesses.

SAML. GABOT, JR.

lVitnesses:

SAML. NORRIS, ARCHIBALD M. HOWE.

